
Diffraction and interference
Authored by Jay Rarugal
Physics, Science
11th - 12th Grade
Used 3+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Two waves E and G are shown. The waves have the same speed.
Which statement is correct?
Wave E has a greater amplitude than wave G.
Wave E has a greater intensity than wave G.
Wave E has a smaller frequency than wave G.
Wave E has a smaller wavelength than wave G.
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The diagram shows a displacement-time graph for a progressive wave.
Amplitude: 5 mm; Frequency: 40 Hz
Amplitude: 5 mm; Frequency: 50 Hz
Amplitude: 10 mm; Frequency: 40 Hz
Amplitude: 10 mm; Frequency: 50 Hz
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which observation indicates that sound waves are longitudinal?
Sound can be reflected from a solid surface.
Sound cannot be polarised.
Sound is diffracted around corners.
Sound is refracted as it passes from hot air to cold air.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A diffraction grating is used to measure the wavelength of monochromatic light, as shown in the diagram.
The spacing of the slits in the grating is 1.00 x10-6 m. The angle between the first order diffraction maxima is 70.0o.
What is the wavelength of the light?
287 nm
470 nm
574 nm
940 nm
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Interference of light is evidence that:
the speed of light is very large
light is a transverse wave
light is electromagnetic in character
light is a wave phenomenon
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
In a Young's double-slit experiment the centre of a bright fringe occurs wherever waves from the slits differ in the distance they travel by a multiple of:
quarter of a wavelength.
half a wavelength.
a wavelength.
three-fourths of a wavelength.
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
In a Young's double-slit experiment, the slit separation is doubled. To maintain the same fringe spacing on the screen, the screen-to-slit distance D must be changed to:
D/2
D
2D
4D
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